Flow verification device for gas in pipeline and verification method thereof

The invention belongs to the technical field of gas detection equipment, and discloses a flow verification device for gas in a pipeline and a verification method thereof.The flow verification device comprises a first box body, a second box body is fixedly installed in the middle of the left side of an inner cavity of the first box body, and a gas inlet pipe communicating with the second box body is fixedly installed on the left side of the first box body. The power device works to drive the screw rod to rotate, part of gas in the second box body can be conveyed into the guide pipes of the upper part and the lower part, the remaining gas flows out of the gas outlet pipe, the gas entering the guide pipes of the upper part and the lower part reacts with the corresponding sensors, and respective gas concentration values are obtained; compared with the prior art, the same kind of gas which is simultaneously conveyed in can be detected twice at the same time, the accuracy of gas concentration detection data of equi